AI agents call getUserProfile to retrieve information from FitBit MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves user profile information from Fitbit without modifying, deleting, or executing operations. It falls under the Read category as a data retrieval operation. Severity is low because profile data exposure has minimal direct impact compared to financial or destructive operations.
From the tool's definition Tool name 'getUserProfile' indicates retrieval of user profile data. Server context shows all sibling tools are read-only data retrievals (getActiveZoneMinutes, getActivities, getBadges, etc.), confirming this as a data query operation.
Documented attack patterns abuse exactly the kind of access getUserProfile gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FitBit MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for getUserProfile:
{
"version": "1",
"default": "deny",
"tools": {
"getUserProfile": {}
}
}getUserProfile is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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getUserProfile. It is categorised as a Read tool in the FitBit MCP MCP Server, which means it retrieves data without modifying state.
Register the FitBit MCP server in PolicyLayer and add a rule for getUserProfile: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches FitBit MCP. Nothing to install.
getUserProfile is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the getUserProfile rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for getUserProfile. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
getUserProfile is provided by the FitBit MCP server (nitayrabi/fitbit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FitBit MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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16 FitBit MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.